First, let’s go to Google trends and see the trend for both the terms "Kubernetes" and "Docker Swarm." What do we see? Clearly, we could see that Kubernetes is beating Docker Swarm. But, is that a valid proof to say Kuberneytes is winning? No way.
Of course, the search volume and trend for "Kubernetes" might be higher, but still, this alone doesn’t prove that Docker Swarm is dead.